Continuity mistake: When Darius Stone is a waiter carrying glasses of champagne, the number of glasses on his tray changes - down to one and then back up to three between shots.
Suggested correction: Incorrect; he starts with 5 glasses on the tray, 4 when Charlie picks hers. At no point (except the very end when General Jack Pettibone grabs his) he has just three, or just one. I can very much see that it looks that way when Ice Cube's head is in the way (looks like there's just one glass left) or part of the tray is off camera (it totally looks like there's just 3), but rewatching the scene is very clear and evident that the number of glasses is accurate.